package com.zhang.controller;

import com.zhang.pojo.Result;
import com.zhang.pojo.User;
import com.zhang.service.UserService;
import com.zhang.utils.JwtUtil;
import com.zhang.utils.Md5Util;
import com.zhang.utils.ThreadLocalUtil;
import jakarta.validation.constraints.Pattern;
import lombok.val;
import org.hibernate.validator.constraints.URL;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.core.ValueOperations;
import org.springframework.util.StringUtils;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.*;

import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;

/**
 * @program: big_event
 * @description: TODO
 * @author: Mr.Zhang
 * @create: 2024-03-15 21:39
 **/
@RestController
@RequestMapping("/user")
@Validated
public class UserController {

    @Autowired
    private UserService userService;

    @Autowired
    private StringRedisTemplate stringRedisTemplate;

    /**
     * 注册用户
     *
     * @param username
     * @param password
     * @return
     */
    @RequestMapping("/register")
    public Result register(@Pattern(regexp = "^\\S{2,16}$") String username, @Pattern(regexp = "^\\S{2,16}$") String password) {
        //查询用户
        User u = userService.findByUsername(username);
        if (u == null) {
            //没有占用
            //注册
            userService.register(username, password);
            return Result.success();
        } else {
            //占用
            return Result.error("用户名已被注册");
        }
    }

    /**
     * 登录
     *
     * @param username
     * @param password
     * @return
     */
    @PostMapping("/login")
    public Result<String> login(@Pattern(regexp = "^\\S{2,16}$") String username, @Pattern(regexp = "^\\S{2,16}$") String password) {
        //根据用户名查询用户
        User loginUser = userService.findByUsername(username);
        //判断是否存在
        if (loginUser == null) {
            return Result.error("用户名错误");
        }
        //判断密码是否正确   loginUser对象中的password是密文
        if (Md5Util.getMD5String(password).equals(loginUser.getPassword())){
            //登录成功
            HashMap<String, Object> claims = new HashMap<>();
            claims.put("id",loginUser.getId());
            claims.put("username",loginUser.getUsername());
            String token = JwtUtil.genToken(claims);
            //把token存储到Redis中
            ValueOperations<String,String> operations = stringRedisTemplate.opsForValue();
            operations.set(token,token,1, TimeUnit.HOURS);

//            return Result.success("jwt token令牌。。");
            return Result.success(token);

        }


        return Result.error("密码错误");
    }


    /**
     * 获取用户详细信息
     * @param
     * @return
     */
    @GetMapping("userInfo")
    public Result<User> userInfo(/*@RequestHeader(name = "Authorization") String token*/){
        //根据用户名查询用户
       /* Map<String, Object> map = JwtUtil.parseToken(token);
        String username = (String) map.get("username");*/

        Map<String,Object> map = ThreadLocalUtil.get();
        String username = (String) map.get("username");

        User user = userService.findByUsername(username);
        return Result.success(user);
    }

    /**
     *  更新用户基本信息
     * @param user
     * @return
     */
    @PutMapping("/update")
    public Result update(@RequestBody @Validated User user){
        userService.update(user);
        return Result.success();
    }

    /**
     * 更新用户头像
     * @param avatarUrl
     * @return
     */
    @PatchMapping("updateAvatar")  //@URL 识别是不是url地址
    public Result updateAvatar(@RequestParam @URL String avatarUrl){
        userService.updateAvatar(avatarUrl);
        return Result.success();
    }


    /**
     * 更新用户密码
     * @param params
     * @return
     */
    @PatchMapping("updatePwd")
    public Result updatePwd(@RequestBody Map<String,String>params,@RequestHeader("Authorization") String token){

        //1、校验参数
        String oldPwd = params.get("old_pwd");
        String newPwd = params.get("new_pwd");
        String rePwd = params.get("re_pwd");

        if (!StringUtils.hasLength(oldPwd) || !StringUtils.hasLength(newPwd) || !StringUtils.hasLength(rePwd)){
            return Result.error("确实秘钥参数");
        }

        //原密码是否正确
        //调用userService根据用户名拿到原密码,在和old_pwd比对
        Map<String,Object> map = ThreadLocalUtil.get();
        String username = (String) map.get("username");
        User loginUser = userService.findByUsername(username);
        if (!loginUser.getPassword().equals(Md5Util.getMD5String(oldPwd))){
            return Result.error("原密码填写不正确");
        }

        //newPwd和rePwd是否愿意
        if (!rePwd.equals(newPwd)){
            return Result.error("两次填写的新密码不一样");
        }

        //2、调用service完成密码更新
        userService.updatePwd(newPwd);

        //删除Redis中对应的Redis
        ValueOperations<String, String> operations = stringRedisTemplate.opsForValue();
        operations.getOperations().delete(token);
        return Result.success();
    }


}
